CN105066487A - Vacuum heat collecting tube with two openings - Google Patents
Vacuum heat collecting tube with two openings Download PDFInfo
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- CN105066487A CN105066487A CN201510540339.5A CN201510540339A CN105066487A CN 105066487 A CN105066487 A CN 105066487A CN 201510540339 A CN201510540339 A CN 201510540339A CN 105066487 A CN105066487 A CN 105066487A
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- tube
- vacuum heat
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- heat collection
- opening
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The invention provides a vacuum heat collecting tube with two openings. The vacuum heat collecting tube with the two openings is provided with an inner tube and an outer tube. The outer tube is a glass tube, and the inner tube is a metal tube. A sealed space formed through the metal inner tube and the glass outer tube is vacuumized to form a vacuum gap interlayer. The two ends of the metal inner tube and the glass outer tube are sealed by using sealing components. The sealing component at one end is provided with a vacuumizing connecting opening and one opening, and the sealing component at the other end is provided with the other opening. Glass material is adopted for the outer wall of the vacuum heat collecting tube; stainless steel, copper, titanium alloy and other metal or alloy material are adopted for the inner wall of the vacuum heat collecting tube, so that the inner wall of the vacuum heat collecting tube is very good in pressure-bearing characteristic compared with glass material, and the problem that an existing vacuum glass tube with two openings can not be applied to a solar water heating system which needs to bear pressure due to the fact that the existing vacuum glass tube with the two openings is low in pressure-bearing capacity is solved. The technical problem that a glass tube is broken due to the melting-sealing, expansion and stress at the connecting part of the existing vacuum glass heat collecting tube and a metal tube is solved by using the special sealing components at the tube openings, and the heat exchange inside the system is made to be more sufficient.
Description
Technical field
The present invention relates to a kind of thermal-collecting tube, especially a kind of two opening vacuum heat collection pipe.
Background technology
Along with the continuous reinforcement of people's environmental consciousness, increasing consumer orientation is in selection solar water heater.Thermal-collecting tube is the core of solar water heater, and its structure, as the glass liner for vacuum flask of same elongation, is vacuum between ectonexine.The outer surface of inner glass tube utilizes special warfare scribble spectral selective absorbing coating to be used for absorbing solar radiant energy to greatest extent.Existing thermal-collecting tube is all that one end open one end is closed, and forms the shape of U-shaped pipe.So its shortcoming is for when being used in natural recirculating type, can at the blind end accumulation incrustation scale of thermal-collecting tube, if do not removed for a long time, incrustation scale can block the port of export of interior pipe.If for forced cyclic type collecting system, then the hot and cold water of system can be made to mix, seriously reduce collecting efficiency.
At the Chinese patent that application number is 95211721.5 and 98206311.3, the vacuum heat collection pipe inner and outer pipes of disclosed two opening is glass material at present, hot water is positioned at top all the time, through microcirculation delivery in attemperater, when opening any water system, hot water in water heater just relies on natural-drop to flow out, and drop is larger, and hydraulic pressure is higher.Thermal-collecting tube due to solar water heater is glass material, cannot be applied in the solar water heating system needing system pressure-bearing.
Disclosed in Taiwan patent (Application No. 84203765) description, a kind of thermal-collecting tube is that a single radial cut metal tube 2 is inserted in single radial cut formula glass heat collection tube 1 inside, and there is a dividing plate 3 its inside, sees Fig. 1.This kind of glass tube with vacuum touches because making glass and metal, therefore makes more not easily, and two material expansion coefficients are different, and easily breaking because of heat in contiguity place, so that loses vacuum.
Summary of the invention
The present invention is directed to the technical problem that above single radial cut or two opening vacuum heat collection pipe exist, provide a kind of two opening vacuum heat collection pipe, solved that incrustation scale in existing vacuum heat collection pipe is easily piled up, difficult cleaning, not pressure-bearing, sealing place easily bursts problem.
In order to achieve the above object, technical scheme of the present invention is as follows: a kind of two opening vacuum heat collection pipe, and have inside and outside two pipes, outer tube is glass tube, interior pipe is metal tube, and the seal cavity that wherein metal inner pipe and outer glass tube are formed forms vacuum gap interlayer through vacuumizing.Metal inner pipe and outer glass tube two ends use seal to seal, and on the seal of sealing both ends, at one end seal are provided with and vacuumize interface and opening, other end seal only arranges opening, form two opening vacuum heat collection pipe.
In order to absorb solar radiant energy to greatest extent, described metal inner pipe outer surface is coated with one deck sunshine coating for selective absorption.
Further improvement, described vacuum gap layer vacuum is higher than 10
-2pa, the solar radiation better preventing metal inner pipe from absorbing heat is loose with surrounding environment through outer tube.
Further improvement, described metal inner pipe is that stainless steel, copper, titanium alloy etc. are made, and pipe in vacuum heat collection pipe will be burst because of reasons such as hydraulic pressure are high, better be applied in the solar water heating system needing system pressure-bearing.
Touch make not easily to solve glass and metal, further improvement of the present invention is, described seal is the cylinder with boss structure, and cylindrical boss side and bottom anchor ring and glass tube are combined closely, and boss face and metal tube are combined closely.
Because glass is different from metal two material expansion coefficient, easily break because of heat in contiguity place, so that lose vacuum, main cause is through great many of experiments analysis, in vacuum, glass tube is subject to being sealed the pressure F of part to it, main stress point can be produced between in the vertical direction glass tube and seal member, make contiguity place easily because of heat and break, the position in Fig. 2 shown in 4.
For this reason, further improve and be, described seal boss height is 3 of described wall thickness of glass tube
~50 times, the boss face of seal is uniformly distributed some semicircles or elliptical shaped lobes unit, and between wherein bottom protrusion element, circle or ellipse are cut between two altogether.Between bottom the protrusion element supposing seal, round diameter is Φ 1, and boss diameter is Φ 2, then have n=Φ 2/ Φ 1, n=50 ~ 1000.
Further improvement is, described seal is have action material that is high temperature resistant, heat insulation, that seal, cushion, includes but not limited to the materials such as rubber.
Compared with prior art, vacuum heat collection pipe outer wall adopts glass material, inwall to adopt the metal materials such as stainless steel, copper, titanium alloy compared with glass material, there is good pressure-bearing characteristic, solve the problem that the existing pair of open glass vacuum tube bearing capacity is low, cannot be applied to the solar water heating system needing system pressure-bearing.Utilize the seal member that the mouth of pipe is special, solve the technical barrier that the sealing by fusing of existing glass heat-collecting vacuum tube and metal tube junction, expansion and stress cause glass tube fragmentation, and make the heat exchange of internal system more abundant.
Accompanying drawing explanation
Fig. 1 prior art vacuum heat collection pipe profile
Glass tube stress envelope when Fig. 2 vacuumizes
The two opening vacuum heat collection pipe profile of Fig. 3 the present invention
Fig. 4 seal front view
Fig. 5 seal schematic perspective view
In figure, 1 is glass tube, and 2 is metal tube, and 3 is dividing plate, and 4 is stress point, and 5 is metal tube, and 6 is glass tube, and 7 is seal member, and 8 is opening, and 9 for vacuumizing interface, and 10 is sunshine coating for selective absorption, and 11 is vacuum gap interlayer.
Detailed description of the invention
Below in conjunction with example, the present invention is described in further detail, but is not limitation of the present invention.
The invention discloses a kind of two opening vacuum heat collection pipe, as shown in Figure 3, have inside and outside two pipes, outer tube is glass tube 6, and interior pipe is metal tube 5, and the seal cavity that wherein metal inner pipe and outer glass tube are formed forms vacuum gap interlayer 11 through vacuumizing.Vacuum gap layer vacuum is higher than 10
-2pa, the solar radiation that can better prevent metal inner pipe from absorbing heat is loose with surrounding environment through outer tube.Metal inner pipe and outer glass tube two ends use seal 7 to seal, and on the seal of sealing both ends, at one end seal are provided with and vacuumize interface 9 and opening 8, other end seal only arranges opening 8, form two opening vacuum heat collection pipe.In order to absorb solar radiant energy to greatest extent, be wherein coated with one deck sunshine coating for selective absorption 10 at metal inner pipe outer surface.Metal inner pipe is that stainless steel, copper, titanium alloy etc. are made, and pipe in vacuum heat collection pipe will be burst because of reasons such as hydraulic pressure are high, better be applied in the solar water heating system needing system pressure-bearing.
During real work, vacuumize from vacuumizing interface 9, seal 7 couples of glass tube pressure F, are shown in Fig. 2, can produce main stress in position shown in 4, in a kind of embodiment, as Fig. 4, shown in, its structure of seal 7 is the cylinder with boss structure, cylindrical boss side and bottom anchor ring and glass tube are combined closely, and boss face and metal tube are combined closely and achieved glass and metal sealing; Described seal boss height is 3 of described wall thickness of glass tube
~50 times, and boss face is uniformly distributed some semicircles or elliptical shaped lobes unit, between wherein bottom protrusion element, circle or ellipse are cut between two altogether, see Fig. 5.Between bottom the protrusion element supposing seal, round diameter is Φ 1, and boss diameter is Φ 2, then have n=Φ 2/ Φ 1, n=50 ~ 1000.
In a kind of preferred mode, choosing sealing member material is rubber parts, work as n=100, or when seal boss height is 10 times of described wall thickness of glass tube, rubber seal now is evenly covered with the protrusion element that quantity is applicable to, can sealing function be played, possess again good cushioning effect, make can not produce too large stress between in the vertical direction glass tube and seal member.Effectively prevent bursting of when vacuumizing glass and metal contiguity place's glass tube.
In another kind of preferred embodiment, n=600, or when seal boss height is 14 times of described wall thickness of glass tube, select rubber seal, also serve good sealing, heat insulation, cushioning effect.When n be less than 50 or be greater than 1000 time, the protrusion element quantity on rubber seal is very little or too much, protruding buffering effect weakens.
Specific embodiment described herein is only to design of the present invention explanation for example.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (9)
1. a two opening vacuum heat collection pipe, comprise glass tube, metal tube and seal, have inside and outside two pipes, outer tube is glass tube, and interior pipe is metal tube, it is characterized in that, the seal cavity that described metal inner pipe and outer glass tube are formed forms vacuum gap interlayer through vacuumizing, and described seal seals, on the seal of sealing both ends metal inner pipe and outer glass tube two ends, at one end seal is provided with and vacuumizes interface and opening, other end seal arranges opening.
2. the two opening vacuum heat collection pipe of one according to claim 1, it is characterized in that, described metal inner pipe outer surface is coated with one deck sunshine coating for selective absorption.
3. the two opening vacuum heat collection pipe of one according to claim 1, it is characterized in that, described vacuum gap layer vacuum is higher than 10-2pa.
4. the two opening vacuum heat collection pipe of one according to claim 1, it is characterized in that, described metal inner pipe is that stainless steel, copper, titanium alloy etc. are made.
5. the two opening vacuum heat collection pipe of one according to claim 1, it is characterized in that, described seal is the cylinder with boss structure, and cylindrical boss side and bottom anchor ring and described glass tube are combined closely, and boss face and described metal tube are combined closely.
6. the two opening vacuum heat collection pipe of one according to claim 5, it is characterized in that, described seal boss height is 3 ~ 50 times of described wall thickness of glass tube.
7. the two opening vacuum heat collection pipe of the one according to claim 5 or 6, it is characterized in that, the boss face of described seal is uniformly distributed some semicircles or elliptical shaped lobes unit, and between bottom described protrusion element, circle or ellipse are cut between two altogether.
8. the two opening vacuum heat collection pipe of one according to claim 7, it is characterized in that, between bottom the protrusion element of described seal, round diameter is Φ 1, and boss diameter is Φ 2, then have n=Φ 2/ Φ 1, n=50 ~ 1000.
9. the two opening vacuum heat collection pipe of the one according to claim 5 to 8 any one, is characterized in that, described seal is have action material that is high temperature resistant, heat insulation, that seal, cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510540339.5A CN105066487B (en) | 2015-08-30 | 2015-08-30 | A kind of dual openings vacuum heat collection pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510540339.5A CN105066487B (en) | 2015-08-30 | 2015-08-30 | A kind of dual openings vacuum heat collection pipe |
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| CN105066487A true CN105066487A (en) | 2015-11-18 |
| CN105066487B CN105066487B (en) | 2017-12-08 |
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| CN201510540339.5A Active CN105066487B (en) | 2015-08-30 | 2015-08-30 | A kind of dual openings vacuum heat collection pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110515132A (en) * | 2019-08-19 | 2019-11-29 | 核工业北京地质研究院 | A kind of small-bore inserting tube suitable for the detection of deep natural gamma spectra |
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| JPH08285378A (en) * | 1995-04-17 | 1996-11-01 | Nippon Electric Glass Co Ltd | Vacuum type solar collector |
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| CN1802487A (en) * | 2003-05-15 | 2006-07-12 | 松下电器产业株式会社 | Mover opening/closing control device |
| CN2804723Y (en) * | 2005-04-20 | 2006-08-09 | 曹修成 | Double-tunnel circulating vacuum glass heat collecting pipe |
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| CN101256038A (en) * | 2008-03-11 | 2008-09-03 | 东南大学 | Straightthrough type double glazing vacuum heat collection tube |
| CN102679573A (en) * | 2012-06-08 | 2012-09-19 | 徐阳 | Dual-casing-pipe vacuum glass intermediate-temperature system and heat collector thereof |
| CN103245090A (en) * | 2013-06-04 | 2013-08-14 | 徐阳 | Single-casing vacuum glass heat collector |
| CN103277181A (en) * | 2013-05-25 | 2013-09-04 | 广西柳工机械股份有限公司 | Radiator installing structure |
| CN103644758A (en) * | 2013-12-06 | 2014-03-19 | 富奥汽车零部件股份有限公司 | Floating shock-absorption radiator |
| CN205026977U (en) * | 2015-08-30 | 2016-02-10 | 朱亚剑 | Two opening evacuated collector tube |
-
2015
- 2015-08-30 CN CN201510540339.5A patent/CN105066487B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5852933A (en) * | 1981-09-25 | 1983-03-29 | Asahi Glass Co Ltd | Improved vacuum double glass tube type collector |
| JPH08285378A (en) * | 1995-04-17 | 1996-11-01 | Nippon Electric Glass Co Ltd | Vacuum type solar collector |
| CN2566193Y (en) * | 2002-07-12 | 2003-08-13 | 清华大学 | Double-through glass-metal vacuum solar heat collecting pipe with direct compensation internal pipe |
| CN1802487A (en) * | 2003-05-15 | 2006-07-12 | 松下电器产业株式会社 | Mover opening/closing control device |
| CN2684102Y (en) * | 2004-03-10 | 2005-03-09 | 宋新民 | All glass vacuum heat-collecting tube with inserted metal interval channel straight tube |
| CN2771748Y (en) * | 2005-01-31 | 2006-04-12 | 潘戈 | Junction sealing fixation structure of glass tube solar heat collector |
| CN2773559Y (en) * | 2005-03-01 | 2006-04-19 | 陈旭枫 | Direct vacuum solar heat-collecting tube with metal internal tube |
| CN2804723Y (en) * | 2005-04-20 | 2006-08-09 | 曹修成 | Double-tunnel circulating vacuum glass heat collecting pipe |
| CN200949937Y (en) * | 2006-08-21 | 2007-09-19 | 河海大学 | Corrugated tube double-layer glass vacuum thermal-collecting tube |
| CN101256038A (en) * | 2008-03-11 | 2008-09-03 | 东南大学 | Straightthrough type double glazing vacuum heat collection tube |
| CN102679573A (en) * | 2012-06-08 | 2012-09-19 | 徐阳 | Dual-casing-pipe vacuum glass intermediate-temperature system and heat collector thereof |
| CN103277181A (en) * | 2013-05-25 | 2013-09-04 | 广西柳工机械股份有限公司 | Radiator installing structure |
| CN103245090A (en) * | 2013-06-04 | 2013-08-14 | 徐阳 | Single-casing vacuum glass heat collector |
| CN103644758A (en) * | 2013-12-06 | 2014-03-19 | 富奥汽车零部件股份有限公司 | Floating shock-absorption radiator |
| CN205026977U (en) * | 2015-08-30 | 2016-02-10 | 朱亚剑 | Two opening evacuated collector tube |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110515132A (en) * | 2019-08-19 | 2019-11-29 | 核工业北京地质研究院 | A kind of small-bore inserting tube suitable for the detection of deep natural gamma spectra |
| CN110515132B (en) * | 2019-08-19 | 2021-10-22 | 核工业北京地质研究院 | Small-caliber probe tube suitable for deep natural gamma energy spectrum detection |
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| CN105066487B (en) | 2017-12-08 |
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